A investigation is underway in Long Beach, California after a violent incident that erupted between Long beach police officers and a man was caught on tape, CBS Los Angeles reported.

The video, posted on YouTube, shows a number of officers surrounding the man on the ground and viciously beating him. The suspect is seen screaming and begging for the officers to stop. One of the officers is seen striking the man with a baton numerous times while the other uses a Taser on him.

The woman recording the video gasps in horror, "They knocked his teeth out. They keep tasering him! They beat the [email protected]*k out of him. Literally I'm shaking, I'm so scared. They keep on tasering him!" she is heard yelling.